Lewellyn — boys' name

What the Data Says About Lewellyn

The Social Security Administration has registered 306 babies named Lewellyn between 1912 and 1962, spanning 51 consecutive years of U.S. birth records. As a boy's name, Lewellyn currently falls outside the top 1,000 boys' names for 1962. The name reached its historical peak in 1929, when 17 babies received it in a single year. Lewellyn is classified as unisex in SSA records: the opposite-sex variant accounts for 33 additional births since 1917.

Decade-level aggregation shows that Lewellyn performed strongest in the 1920s, accumulating 97 births during that ten-year window. Across the 6 decades of recorded activity, Lewellyn shows a clear decline from its mid-century high.

No etymological entry is currently available for Lewellyn in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 306 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.